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        THATSHIGH Photoelectric Technology Co., Ltd.

        Add: Office Building No.1, 677 Tian-chen Road., National
           High-tech Development Zone, Jinan, China
        PC : 250100
        Tel: +86-531-88687737
          +86-531-88687116
        Fax:+86-531-88907971
        E-mail:sales@thatshigh.com
        Website:www.thatshigh.com

        • Product Name: Nd:YAG
        • NO.: 2001

        Inquiry

        Nd:YAG is the earliest and most well-known laser host crystal. Since it combines obvious advantages in basic properties of laser crystal, Nd:YAG has ubiquitous presence in near-infrared solid-state lasers and their frequency-doubler, tripler, and higher order multiplier.

        Basic Properties of Nd:YAG Crystal 

        Crystal Structure

        Cubic

        Lattice Constant

        12.01 Å

        Melting Point

        1970 °C

        Density

        4.5 g·cm-3

        Reflective Index

        1.82

        Thermal Expansion Coefficient

        7.8×10-6 /K <111>

        Thermal Conductivity (W/m/K)

        14 @20°C  10.5 @100°C

        Mohs Hardness

        8.5

        Stimulated Emission Cross-section

        2.8×10-19 cm-2

        Relaxation Time of  Terminal Lasing Level

        30 ns

        Radiative Lifetime

        550 μs

        Spontaneous Fluorescence

        230 μs

        Line width

        0.6 nm

        Loss Coefficient

        0.003 cm-1 @1064nm

        THATSHIGH Specifications for Nd:YAG Crystal

        Dimension

        Maximum length 200mm with tolerance ±0.5mm 

        Maximum diameter 20mm with tolerance ±0.05mm

        Doping Concentration Nd

        0.3~1.0 (±0.1) atm%

        Chamfer

        0.1mm @45º

        Wavefront Distortion

        λ/8 @633nm

        Damage Threshold

        >750MW/cm2

        Flatness

        λ/10 @633nm

        Parallelism

        < 10"

        Perpendicularity

        ≤5′

        Surface Quality [S/D]

        10/5 

        Coating

        HR

        R>99.8% @1064nm   R<5% @808nm

        AR

        R<0.15% @1064nm

        Other HR coatings, e.g. HR@1064nm & 532nm, 946nm, 1319nm etc. are also available

        THATSHIGH Quality Standard of Nd:YAG Crystal

        Diameter (mm)

        Standard Grad

        Excellence Grade

        Super Excellence Grade

        φ3~6.35

        ≤ 0.5 fringes/ inch

        ≤ 0.25 fringes/ inch

        ≤ 0.1 fringes/ inch

        ≥ 25 dB

        ≥ 28 dB

        ≥ 30 dB

        φ7~10

        ≤ 0.7 fringes/ inch

        ≤ 0.4 fringes/ inch

        ≤ 0.16 fringes/ inch

        ≥ 22 dB

        ≥ 25 dB

        ≥ 28 dB

        φ11~13

        ≤ 1 fringes/ inch

        ≤ 0.6 fringes/ inch

        ≤ 0.2 fringes/ inch

        ≥ 20 dB

        ≥ 23 dB

        ≥ 26 dB

        φ14~16

        ≤ 1.2 fringes/inch

        ≤ 0.8 fringes/inch

        ≤ 0.25 fringes/inch

        ≥ 18 dB

        ≥ 20 dB

        ≥ 23 dB

        Note: Nd:YAG rods for 946 nm or 1319 nm lasers, and higher grade or specific Nd:YAG rods or slabs can be provided. Er:YAG, Yb:YAG and other ion doped YAG crystals are also available upon request.

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